Combination lock



W. WISMIEWSKI.

COMBINATION LOCK.

APPLICATION FILED JUNE 30. 1921.

Patented May 16,1922;

' 2 SHEETS-SHEET 2.

I INVEN TOR.

WATENT @FFICE.

WALTER WISMIEWSKI, 0F SYRACUSE, NEW YORK, ASSIGNOR OF ONE-HALF TO JOSEPH BARAMSKI, 0F SYRACUSE, NEW YORK.

COMBINATION LOCK.

Specification of Letters Patent. Patented May 16 1922 Application filed'J'une 30, 1921. SerialNo. 481,493.

To all to hem it may concern I Be it known that I, WALTER lVIsMIEwsKI, a citizen of the United States, and a resident of Syracuse, in the county of Onondaga and State of New York, have invented a certain new and useful Combination Lock, of which the following is a specification.

This invention relates to combination locks and has for its object a particularlysimple and efficient lock mechanism by which the combination can be readily changed or'readjusted and by which the lock mechanism can be operated by one knowing the combination without watching an index or dial. The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings, in which like characters designate corresponding parts in all the views.

Figure 1 is an elevation of the lock mechanism embodying my invention the casing or box therefor and contiguous parts; being shown in section and the handles being removed.

Figure 2 is a fragmentary elevation of parts seen in Fig. 1, the tumblers and lockings disks coacting therewith being shown in unlocked position and parts being omitted.

Figures 3 and 4 are face views of the looking disks.

Figures 5 and 6 are edge views thereof.

Figure 7 is a sectional view, taken on the plane of lines-7-7, Fig. 1. v

Figure 8 is a sectional view taken on the plane of lines 8-8, Fig. 1, the disks being slightly displaced or rotated out of relative position they would assume in order to show the pinsor shoulders connecting the disks.

The combination lock comprises generally a movable tumbler and a plurality of locking disks coacting with the tumbler to normally hold it from unlocking movement and having notches arranged to be brought into alinemeut with each other and with a portion of, as a projecting shoulder, or tail, of the tumbler, to permit unlocking movement of the tumbler, means connecting the disks by a lost motion connection, a handle having a shank on which the disks are mounted and a third disk mounted on the shank of the handle to rotate therewith, means connecting the third disk and one of the locking disks to transmit the rotary movement of the handle to the locking disk, the third disk having a series of notches and a dwell or blank portion and a follower coacting with the notched periphery and dwell portion of the third disk.

The look here illustrated, is shown as of double construction, that is, each half contains a tumbler and lock mechanism, which by spring arms 7 and are moved out of their locking position by suitable means as a cam 8 arranged between the tumblers and coacting on opposite sides of its axis with surfaces as 9, on opposing sides of the, tumblers.

The cam 8, as here shown,.is mounted upon a hollow sleeve, or stud 10, carried by a wall of the box or casing 3, and is operated by means of a handle 11 j ournalled in a suitable bearing 12 on the wall of the box 3 and having a shank 13 extending in the sleeve 10 and also having radialshoulders or pins 14.: which interlock in notches 15 inv the sleeve 8 of the cam 8. The handle and its shank are held from removal by. a screw 16 threading in the inner end of the shank and having its head thrusting against its shoulder as 17 atthe bottom of a countersink in the inner end of the sleeve 10. The sleeve alinement with each other and with a tail 6 of the tumbler to permit pivotal movement of the tumbler to unlock the same. These disks are here shown as rotatably mounted upon a sleeve 23 similar to the sleeve 10 and supported by the wall 24 of the bo 3, and one of these disks is connected to the handle 25, the shank 26 of which is journalled in the sleeve 23, The disks 19 and 20 are connected by a lost motion connection by means of which the disk 20, which is connected to the handle, can be rotated in one direction to take up the lost motion and then move the disk 19 therewith until its notch 21 is alined with the tailG of the tumbler 1, and then can be rotated in the opposite direction relatively to the disk 19 until its notch 22 is al-in'ed with the notch 21 of the disk 19 and also with the tail '6 of tumbler 1. This lost motion =is-here shown as provided for by pins o'r'sh'oulders '27 and 28 on theopposing faces of thedisks 19 and20 and arranged in each others path so that during "turning of the,

disk 20 by the handle 25 the shoulder 28 first strikes or picks up the shoulder27 and moves the disk 19 until the notch 21thereof is 'alinedwith' the tail 6 of the tumbler and then upon movement of the disk 20 in a reverse direction, the shoulder 28 moves'away from the shoulder 27. The shoulder 28 is one 'end of a pin 31 extending transversely through the disk 20.

The {motion o'f-the handle 25 is transferred to=the disk'20 through a third disk 30m'ou'nted on the sleeve 23 and connected to the disk 20 by means of a pin 31 extending through one of the series of holes '32 in the third disk-wand in the hole in the disk 20, oneend of this pin 31 serves'as the shoulder 28, the third disk 30 is connected to the shank of the handle by means of a fourth disk 34: mounted on one end of the sleeve 23 to rotate thereon and having a hub 35 journalled in Or extending into a hub 36on the 'walls'of thecasing 3, this hub35 having a non-circular bore 37 and the shank of the handle-25 having a non-circular portion 38 fitting said non-circular bore 3'7. The fourth disk-3et is provided with a pin 39 which extends into a hole 30 in the disk 30. The combination required to operate the disks 19 and 20 can be varied by arranging the pin 31 in different holes 32.

The third disk 30 is provided withaseries of rounding teeth 42 on its periphery and with a blank or dwell portion 43, and a spring-pressed follower a l'coacts with these roundingteeth l2 and dwell portion 43. The followers-4A for both sets of locking mechanis'm are acted upon by a single spring 45 tending to move the respective followers 44 on their pivots 46 into engagement with the disk 30 onthe two sets oflocking mechanism.

In operation, assuming that the combination required to open the lock is, first, five points to the right and seven points to the left, the operator first brings the knob or handle 25 of one lock mechanism until the follower is on the dwell portion 43 of the disk 30. He then turns the handle five notches to the right as indicated to the sense of touch, due to the follower 6A- ratcheting over the rounding teeth 42, such movement brings the notch 21 on the disk 19 into alinement with the tail 6 of the corresponding tumbler 1. He then turns the handle in the opposite direction, moving the disk 20 relatively to the-disk 19 which remains stationary by reason of the extreme tip of a tail 6 being partly in the mouth of the notch 21, the operator turning the handle seven notches to the right, thereby bringing the notch 22 on the disk 20 into alinement with the tail Got the corresponding tumbler. The same operation is performed on the other set of looking mechanism, either with the same combination or with any other combination, it is desired to use. He then turns the handle '11 moving the tumblers 1 out of engagement with the locking part 5 so that the box or cabinet can be opened.

What I claim is:

In a combination lock, the combination of a pair of tumblers mounted upon a common axis and having shoulders on opposite sides of said axis, a spring mounted on said axis and tending to move them into'operative position, an operating member mounted between the tumblers and acting to force the same on their pivots out of operative position, sets of rotary disks, each set arranged with their peripheries engaged with one of the shoulders to prevent movement of the tumblers, the disks having peripheral notches arranged to be brought into alinement with each other and with the shoulder of one of the tumblers for permitting move ment with the tumbler with which the shoulder is associated, a handle for each set of disks, the handle having a shank, the disks being mounted concentric with the shank, a third disk associated with each set, :and mounted concentric with the shank of the handle and connected thereto to rotate therewith, means for permanently connecting the third disk to one of the notched disks, means for connecting the notched disks together by a lost motion connection whereby movement in one direction of the notched disk connected to the third disk takes up the lost motion and rotates the other notched disk therewith and permits movement of the notched disk connected to the third disk in the opposite direction relatively to the other notcheddisk, each third disk having a series of rounding notches and a dwell portion, a pair of spring pressed followers arranged between the third disk and below the axis of the tumblers and coacting with the notches and the dwell portion of the third disks respectively, and being normally engaged with the third disk in all changes of the combinasaid dwell portion, and the disk connected to tion. 10 each third disk being connected to the third In testimony whereof, I have hereunto disk to permit that disk connected to the signed my name, at Syracuse, in the county third disk to be adjustably shifted relaof Onondaga, and State of New York, this tively to the third disk without changing the 22nd day of June, 1921.

position of the third disk whereby the fol- I lower normally engages the dwell portion of WALTER -WISMIEWSKI, 

